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Allow use of instanceof without Symbol

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This commit is contained in:
Tim Schaub 2015-11-03 08:34:35 -08:00
parent 30311d121e
commit 8edb208992
1 changed files with 1 additions and 1 deletions
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2
packages/babel-helpers/src/helpers.js
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@ -181,7 +181,7 @@ export let inherits = template(`
export let _instanceof = template(`
(function (left, right) {
if (right != null && right[Symbol.hasInstance]) {
if (right != null && typeof Symbol !== "undefined" && right[Symbol.hasInstance]) {
return right[Symbol.hasInstance](left);
} else {
return left instanceof right;